Small Block Head Flow Chart

CNC IndyBrocks out of box 2.055 1.6 valves, Indy's exh #s are without a pipe, mine are with a pipe
column 1 Indy's advertised #s
column 2 actual out of box #s
column 3 fixed valve job and better Ferrea valves
----------1----------------2--------------------3
.100 72/66..............59/49 ................ 65/49
.200 132/113 ......... 123/108 ............ 150/113
.300 197/145.......... 180/150 .............204/155
.400 248/170 ......... 229/178............. 248/184
.500 277/183 ......... 261/194 ............ 280/206
.600 302/191.......... 284/208 .............292/215
.700 306/197...........284/215............. 287/222